Periodicities
n. [数] 周期性；频率；定期性
🗣️ 情景例句
Yes, how many would you like?
好，你要几片？
I doubt that I'll do anything tomorrow.
我不确定我明天将做什么事。
The curious thing was that the lake was not marked on the map.
奇怪的是那个湖没有在地图上标出。